Ventilator



a e h S m e e h S 2 R E I w T NA mm Hm 0V S m d 0 M o m Patented Nov. 3,1885.

2 Sheets-Sheet 2.

(No Model.)

W. SGHARNWEBER.

VBNTILATOR.

Patented Nov. 3

UNITED STATES PATENT OFFICE.

\VILLIAM SCHARNVEBER, OF JEFFERSON, ILLlNOlS.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 329.680, dated November3, 1885.

Application filed June J3, 1885 To aZZ whom it may concern.-

Be it known that 1, WILLIAM SOHARNWE- BER, a citizen of the UnitedStates, residing at Jefferson, in the county of Cook and State ofIllinois, have invented certain new and use: ful Improvements inVentilators; and I hereby declare the following to be a full, clear, andexact description of the same.

The direct introduction of outside air into an apartment by means of theventilators ordinarily provided for that purpose is not only the causeof much positive discomfort to the occupants, besides rendering themliable to the ill effects entailed by exposure to drafts, but is also initself an insufficient and ineflective method of oxygenating a vitiatedatmosphere, for the reason that when outside air is permitted directentrance at a low level for purposes of ventilation it remains near thefloor, since it is colder than the heated air contained within theapartment and of consequent greater specific gravity; hence it will notrise, and there is no general admixture with the heated vitiatedatmosphere above it, and a satisfactory ventilation is not accomplished.

It is the object of my invention to provide for the ventilation ofapartments, including particularly stores and cars, whereby thedifiiculties hereinbefore stated shall be obviated, and to afiord adevice whereby a controllable supply of fresh air shall be afforded tothe occupants of the apartment in an efficient and convenient manner,and by means simpler, less costly, and of more tasteful appearance andattractive design than the devices generally at present in use.

To these ends my invention consists in means of peculiar constructionfor deflecting upward the current of fresh air as it enters fromwithout, thus creating a suction toward it from all parts of theapartment, and causing it to be quickly and thoroughly admixed with thevitiated air, which it is designed to purify; and it also consists inthe details of construction and combinations of parts shown anddescribed in the accompanying drawings, in which- Figure 1 represents inelevation an interior view of a window provided upon its lower and uppersashes with ventilators of my improved construction; Fig. 2, a view inelevation, showing from the exterior a broken portion of sash providedwith my improvement Fig. 3, a

Serial No. 169,510. (No model.)

similar interior view having parts broken away to display details; Fig.4, a vertical cross-section of a sash having a ventilator affixedthereto; Fig. 5, a perspective view of a broken portion of theperforated sliding covering-plate and guide-plate, and Fig. 6 a similarView showing from the inside one end of my improved device.

A is a window-sash of common construction, (shown with its surroundingcasement l; in Fig. 1,) having holest bored through a bar where it isdesired to place the ventilator, and the holes t in the sash arecoincident with openings 16, formed in a covering-plate, s, betweenwhich and the holes a strip of wiregauze, s, is interposed to prevent,when the sliding plate of the ventilator hereinafter de scribed is open,entrance of dust and insects to the apartment within. The covering-plates is provided upon its upper lateral edge with a sharpened projectingflange, s, wliich,when the covering-plate is secured upon the bar of thesash A, enters the substance of the wood, thus preventing rain or waterused in cleaning the window from percolating within the covering-plateand thence gaining entrance to the apartment. A sliding plate, 1',provided with openings r, affords at will controllable communicationwith the external air, and moves within guides q, formed by a sheetmetalplate, (1, afiixed to the interior of the sash, and also provided withopenings coincident with the holest and openings t. A haudle, p, formedupon the sliding plate r affords a convenient means of sliding thelatter. A guard or shield, O, is secured to the sash covering theinterior features of the device in the manner hereinafter described, andpreventing direct entrance of outside air to the apartment. A recess, 0,is formed in the shield either at a central point or preferably, asshown, at each extremity, and affords firm and convenient thumb-piecesto permit a window to be'raiscd without the annoyance and inconvenienceto the operator of manipulating it by the upper sash. The shield G isaifixed to the sash to cover the ventilating portion of the device insuch a position that its lower edge closely approaches the sliding plate2', while its vertical portion u, Fig. 4, is formed to lie parallel withthe sash and at a distance from it which it is found will best permitentrance and deflection at a right angle of outside air, preferablyabout three-fourths of an inch. The handle p, projecting somewhat abovethe upper edge of the shield 0, permits control, as hereinbefore stated,01' the sliding plate r, whereby, when the openings 1" are in line withthe holes 6 in the sash and openings t in the covering-plate 8, freshair is permitted unobstructed entrance to the apartment, being deflectedupward by the vertical portion at of the shield C, in order that thedesired objects hereinbefore described may be attained. Of course thesupply of air may be regulated atwill by means of the sliding plate 1-,or, if desired, completely shut off by sliding the plate into such aposition that the openings communicating with the external air areclosed.

My device is of especial importance when applied to the ventilationofthe show-windows of stores. When used for this purpose, two of myimproved ventilators preferably are emp1oycdone, as usual, upon thelower sash, and another opening downward, as shown in Fig. 1, upon theupper sash, which permits the entering currents of cold air to escapeand approach each other, and, being kept in close contact with thewindow by reason of the deflecting-shields C, the cold-air currentprevents gathering of moisture upon the glass and the consequentformation of frost, thus keeping the windows unobstructed to the view ofpass ers by, and permitting the desired display of merchandise withinthe windows.

A very important application of my device, and one in which it is at thepresent time suc cessfully employed, is that to the lower parts of doorsinstead of windows. and such application aflords particular advantageswhere the doorways are unprovided with transoms.

\Vhat I claim as new, and desire to secure by Letters Patent, is

A ventilator comprising, in combination with a windowsash, door, or thelike, pro vided with one or more openings leading from the externalatmosphere into an apartment, a shield, G, secured over the said openingor openings and entirely open at its upper side, whereby the volume ofair may escape from the shield without obstruction of the current, andmeans, substantially as described, within the said shield to control thesupply of air through the said opening or openings, as set forth.

\VI LLIAM SGHARN \VEBER.

In presence of- HENRY N. MANN, MAsoN BROSS.

